Protective collar



FIG. 1 is a front perspective view of a protective collar in accordance with the design;

FIG. 2 is a top view of the design thereof;

FIG. 3 is an underside side view of the design thereof;

FIG. 4 is a front view of the design thereof;

FIG. 5 is a rear view of the design thereof;

FIG. 6 is a left side view of the design thereof; and,

FIG. 7 is a right side view of the design thereof.

The broken lines depict claimed stitching. 

CLAIM I claim the ornamental design for a protective collar, as shown and described. 